1 files changed, 3 insertions, 0 deletions
diff --git a/src/lookup/lookup.h b/src/lookup/lookup.h
index c5e814a..0fc590b 100644
--- a/src/lookup/lookup.h
+++ b/src/lookup/lookup.h
@@ -22,10 +22,13 @@
 #ifndef LOOKUP_H
 #define LOOKUP_H
 
+
 /** @file lookup.h
  *  @brief the definitions of common lookup related classes and structs.
  */
 
+#include "novel_types.h"
+
 namespace pinyin{
 
 typedef phrase_token_t lookup_key_t;